emWin upgrade     Trade-In program     Web shop
Flag icon Head office Germany
Flag icon US office

ISO 9001 certified

M16C, NC30

embOS for Renesas M16C6x / M16C20 was developed for and with Renesas' NC30 compiler and supports all memory models offered by this compiler.
It comes with easy to use start projects for Renesas' HEW 4. Software development with PD30 emulator, simulator and KD30 ROM-Monitor is supported.


Pricing Trial download Notification Subscribe to embOS software notification Release Notes


Resources and performance data

Memory usage
Kernel size (ROM) 1338 bytes
Kernel RAM usage 25 bytes
RAM usage per task control block 19 bytes
RAM usage per resource semaphore 4 bytes
RAM usage per counting semaphore 2 bytes
RAM usage per mailbox 11 bytes
RAM usage per software timer 11 bytes
RAM usage event 0 bytes
Min. stack-size per task (RAM) 40 bytes
Context switch time 523 clock cycles (32.6 µs), independent of number of tasks
Interrupt latency time Max. 51 clock cycles (3.2 µs)
Kernel CPU usage/TICK Less than .4% of total calculation time at 1000 interrupts/second (1ms TICK)
Basic time unit (TICK) Typ. 1 ms, min. 20 µs (50 kHz interrupt frequency)
Max. no. of tasks Unlimited (by available RAM only)
Max. no. of mailboxes Unlimited (by available RAM only)
Max. no. of semaphores Unlimited (by available RAM only)
Max. no. of software timers Unlimited (by available RAM only)
Max. no. of priorities 255
Stack size idle task (RAM) 0 (no memory needed)
Nested interrupts Permitted
Task switches from within ISR Possible

Absolute timings given above were measured with embOS release build on an M30624 CPU running at 16MHz in NEAR memory model.

Board support packages

embOS comes with lots of ready to go start projects and support packages for various M16C CPUs and starterboards.

CPU Eval board
Renesas M16C62 MSC ModSDK-M16C-Base
Renesas M16C62P MSC ModSDK-M16C-Base
Renesas M16C65 MSC ModSDK-M16C-Base